82515844 has 12 divisors (see below), whose sum is σ = 144648000. Its totient is φ = 41187848.

The previous prime is 82515833. The next prime is 82515887. The reversal of 82515844 is 44851528.

It is a super-2 number, since 2×82515844² = 13617729022064672, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14824 + ... + 19615.

It is an arithmetic number, because the mean of its divisors is an integer number (12054000).

Almost surely, 2^82515844 is an apocalyptic number.

It is an amenable number.

82515844 is a deficient number, since it is larger than the sum of its proper divisors (62132156).

82515844 is a wasteful number, since it uses less digits than its factorization.

82515844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35042 (or 35040 counting only the distinct ones).

The product of its digits is 51200, while the sum is 37.

The square root of 82515844 is about 9083.8232039158. The cubic root of 82515844 is about 435.3572508911.

The spelling of 82515844 in words is "eighty-two million, five hundred fifteen thousand, eight hundred forty-four".